Jealousy and Envy-ness..Is tat normal for us??

Sometimes, one really need to learn how to accept things ..I can see tat alot of ppl still cant master it..even i,myself cant really master it.....but i understand..it kinda hard to forget or accept things tat u hope for all the while...but too bad..one shud be brave to face it..no matter is good or bad thing....its our life and we must accept it wif willingly.....i've seen alot of ppl who will grumble about their life..."why i born like this??".."why he/she more handsome/pretty than me".."why i cant be popular among my frend??"..."why i cant be as rich as them??"...."why god always treat me like this??".."why i cant get things that i wanted??"..."why i always have to be like tat??" those kind of question.....i cant really blame they as jealousy and envy-ness(is this word exist??) are already in human by nature....maybe ther's reason why god must include this kind if feeling inside us......but i always wonder how's world without jealousy will look like.....will the world become more peaceful or the world will become more boring.....but IMHO...sometimes jealousy will make one improve and become a better person....but i dun prefer to use jealousy to improve ourself..as sometime when one jealousy become bigger....bad thing will happen...i prefer to use 'dream' to improve ourself...as i believe....dreams lead to ambitions..ambitions lead to goals....

but still its just my 2 cent...